National Weather Service Forecast for: Shelby MT
Issued by: National Weather Service Great Falls, MT
Updated: 6:12 pm MST Dec 17, 2025
 
Tonight

Tonight: A 30 percent chance of snow, mainly before 7pm. Partly cloudy, with a low around 18. Windy, with a west northwest wind 26 to 36 mph decreasing to 10 to 20 mph. Winds could gust as high as 55 mph. Total nighttime snow accumulation of less than a half inch possible.
Chance Snow
and Windy

 Thursday

Thursday: Increasing clouds, with a high near 37. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Increasing
Clouds

 Thursday
Night
Thursday Night: A slight chance of rain and snow before 2am, then a slight chance of rain. Mostly cloudy, with a temperature falling to near 30 by 9pm, then rising to around 43 during the remainder of the night. Breezy, with a southwest wind 14 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.
Slight Chance
Rain/Snow and
Breezy
 Friday

Friday: Mostly sunny, with a high near 43. Breezy, with a west wind 20 to 22 mph, with gusts as high as 36 mph.
Mostly Sunny
and Breezy
then Mostly
Sunny
 Friday
Night
Friday Night: Mostly clear, with a low around 15. West wind 10 to 13 mph, with gusts as high as 21 mph.
Mostly Clear

 Saturday

Saturday: Mostly sunny, with a high near 36. West southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Mostly Sunny

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 21. West southwest wind 13 to 15 mph, with gusts as high as 26 mph.
Partly Cloudy

 Sunday

Sunday: Mostly sunny, with a high near 38. South wind around 10 mph, with gusts as high as 18 mph.
Mostly Sunny

 Sunday
Night
Sunday Night: A slight chance of snow after 11pm. Partly cloudy, with a low around 15.
Slight Chance
Snow
Lo 18 °F Hi 37 °F Lo 30 °F⇑ Hi 43 °F Lo 15 °F Hi 36 °F Lo 21 °F Hi 38 °F Lo 15 °F

High Wind Warning
 

Tonight
 
 A 30 percent chance of snow, mainly before 7pm. Partly cloudy, with a low around 18. Windy, with a west northwest wind 26 to 36 mph decreasing to 10 to 20 mph. Winds could gust as high as 55 mph. Total nighttime snow accumulation of less than a half inch possible.
Thursday
 
 Increasing clouds, with a high near 37. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Thursday Night
 
 A slight chance of rain and snow before 2am, then a slight chance of rain. Mostly cloudy, with a temperature falling to near 30 by 9pm, then rising to around 43 during the remainder of the night. Breezy, with a southwest wind 14 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.
Friday
 
 Mostly sunny, with a high near 43. Breezy, with a west wind 20 to 22 mph, with gusts as high as 36 mph.
Friday Night
 
 Mostly clear, with a low around 15. West wind 10 to 13 mph, with gusts as high as 21 mph.
Saturday
 
 Mostly sunny, with a high near 36. West southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday Night
 
 Partly cloudy, with a low around 21. West southwest wind 13 to 15 mph, with gusts as high as 26 mph.
Sunday
 
 Mostly sunny, with a high near 38. South wind around 10 mph, with gusts as high as 18 mph.
Sunday Night
 
 A slight chance of snow after 11pm. Partly cloudy, with a low around 15.
Monday
 
 A slight chance of snow before 11am. Mostly sunny, with a high near 34.
Monday Night
 
 Partly cloudy, with a low around 13.
Tuesday
 
 Mostly sunny, with a high near 37.
Tuesday Night
 
 Mostly cloudy, with a low around 18.
Wednesday
 
 Partly sunny, with a high near 37.

 

Forecast from NOAA-NWS for Shelby MT.